TW331609B - Keying apparatus - Google Patents

Keying apparatus

Info

Publication number
TW331609B
TW331609B TW086103039A TW86103039A TW331609B TW 331609 B TW331609 B TW 331609B TW 086103039 A TW086103039 A TW 086103039A TW 86103039 A TW86103039 A TW 86103039A TW 331609 B TW331609 B TW 331609B
Authority
TW
Taiwan
Prior art keywords
produce
light beams
level
detect
nodes
Prior art date
Application number
TW086103039A
Other languages
Chinese (zh)
Inventor
Hsia Chih-Yu
Original Assignee
Hsia Chih-Yu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hsia Chih-Yu filed Critical Hsia Chih-Yu
Application granted granted Critical
Publication of TW331609B publication Critical patent/TW331609B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
    • H03K17/943—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector using a plurality of optical emitters or detectors, e.g. keyboard
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers

Abstract

A photoelectric keyboard switch apparatus comprising a first structure to produce and detect laterally directed and longitudinally spaced first light beams at a first level in a simulated keyboard area, which is open; a second structure to produce and detect longitudinally directed, laterally spaced second light beams at or proximate to the first level, in the area, whereby the first and second light beams produce a grid like pattern having cross-over nodes; a third structure to produce and detect third light beams at a second level or levels, whereby user^s finger interruption of a third beam occurs in conjunction with finger interruption of the first and second beam at or near one or more nodes.
TW086103039A 1995-08-24 1997-03-12 Keying apparatus TW331609B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/518,680 US5880462A (en) 1995-08-24 1995-08-24 Keying apparatus with thumb gap

Publications (1)

Publication Number Publication Date
TW331609B true TW331609B (en) 1998-05-11

Family

ID=24065017

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086103039A TW331609B (en) 1995-08-24 1997-03-12 Keying apparatus

Country Status (2)

Country Link
US (1) US5880462A (en)
TW (1) TW331609B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7110547B2 (en) * 2000-06-20 2006-09-19 University Of New Hampshire Method and apparatus for the compression and decompression of image files using a chaotic system
US20100238139A1 (en) * 2009-02-15 2010-09-23 Neonode Inc. Optical touch screen systems using wide light beams
US8416217B1 (en) 2002-11-04 2013-04-09 Neonode Inc. Light-based finger gesture user interface
DE102007039718B4 (en) * 2007-08-22 2015-11-05 Wincor Nixdorf International Gmbh Keyboard with infrared sensor
US9063614B2 (en) 2009-02-15 2015-06-23 Neonode Inc. Optical touch screens
KR101789683B1 (en) * 2011-06-13 2017-11-20 삼성전자주식회사 Display apparatus and Method for controlling display apparatus and remote controller
US10585530B2 (en) 2014-09-23 2020-03-10 Neonode Inc. Optical proximity sensor
US9164625B2 (en) 2012-10-14 2015-10-20 Neonode Inc. Proximity sensor for determining two-dimensional coordinates of a proximal object
US9207800B1 (en) 2014-09-23 2015-12-08 Neonode Inc. Integrated light guide and touch screen frame and multi-touch determination method
US10324565B2 (en) 2013-05-30 2019-06-18 Neonode Inc. Optical proximity sensor
US9921661B2 (en) 2012-10-14 2018-03-20 Neonode Inc. Optical proximity sensor and associated user interface
US10282034B2 (en) 2012-10-14 2019-05-07 Neonode Inc. Touch sensitive curved and flexible displays
CN104749988B (en) * 2013-12-26 2017-12-05 同方威视技术股份有限公司 Optoelectronic switch for object detection
EP4085321A4 (en) 2019-12-31 2024-01-24 Neonode Inc Contactless touch input system
EP4222586A1 (en) 2020-09-30 2023-08-09 Neonode Inc. Optical touch sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384201A (en) * 1978-04-24 1983-05-17 Carroll Manufacturing Corporation Three-dimensional protective interlock apparatus
US5136156A (en) * 1988-11-01 1992-08-04 Mitsubishi Denki Kabushiki Kaisha Photoelectric switch
JP2683093B2 (en) * 1989-04-04 1997-11-26 アルプス電気株式会社 Optical coordinate input device
US5477223A (en) * 1992-08-12 1995-12-19 Destremps; Gerald Finger activated keyboard for a computer

Also Published As

Publication number Publication date
US5880462A (en) 1999-03-09

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